单项选择题In our class, when the bell rang and the teacher closed his book, it was a () for everyone to stand up.
A.signal B.chance C.mark D.measure
单项选择题The computer revolution may well change society as () as did the Industrial Revolution.
A.certainly B.insignificantly C.fundamentally D.comparatively
单项选择题The machines are made ()at full speed.
A.work B.working C.to work D.to be worked
单项选择题The dictionary is what I want, but I don't have enough money()me.
A. by B. for C. in D. with
单项选择题—Do you like the place of interest —On the contrary,it's the()place that I want to visit.
A. worst B. last C. best D. latest